commit 1215557e91e551031d89cb89e235ec3483ac7a91
author Dave Rodgman <dave.rodgman@arm.com> Fri Feb 24 15:41:34 2023 +0000
committer Dave Rodgman <dave.rodgman@arm.com> Fri Feb 24 16:02:26 2023 +0000
tree 3625df1a88f9f304436cfb0cf9747114448aca92
parent 13938b84e95c5508f497ebfcc831901b3a355d00

Add corresponding fix for mbedtls_ssl_write

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>

library/ssl_msg.c

diff --git a/library/ssl_msg.c b/library/ssl_msg.c
index db0299e..8a2ab7b 100644
--- a/library/ssl_msg.c
+++ b/library/ssl_msg.c
@@ -5508,7 +5508,9 @@
          */
         ssl->out_msglen  = len;
         ssl->out_msgtype = MBEDTLS_SSL_MSG_APPLICATION_DATA;
-        memcpy(ssl->out_msg, buf, len);
+        if (len > 0) {
+            memcpy(ssl->out_msg, buf, len);
+        }
 
         if ((ret = mbedtls_ssl_write_record(ssl, SSL_FORCE_FLUSH)) != 0) {
             MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_write_record", ret);